Partial discharge detection system for alternating current withstand voltage test of high-voltage switchgear

Abstract

The invention provides a partial discharge detection system for an alternating current withstand voltage test of a high-voltage switchgear,and belongs to the field of power testing,so as to solve theproblems that the method of the alternating current withstand voltage test of the high-voltage switchgear has great subjectivity and limitation,and the test method is not reliable. The system comprises: each acquisition sensor group is connected with a signal preprocessing module,the signal preprocessing module is sequentially connected with an ADC processing module and a first wireless transceiver module,the first wireless transceiver module is wirelessly connected with the second wireless transceiver module,the second wireless transceiver module is connected with the processing module,the processing module is connected with a display module,the processing module is also connected with a storage module,the processing module is also connected with a diagnosis module,the diagnosis module isconnected with the display module,the processing module is also connected with an alarm module,the processing module is also connected with the second wireless transceiver module,the second wirelesstransceiver module is wirelessly connected with a third wireless transceiver module,and the third wireless transceiver module is connected with a voltage regulator control module and a voltage fluctuation module sequentially.

Description

technical field [0001] The invention relates to the technical field of electric power testing, in particular to a partial discharge detection system used for AC withstand voltage tests of high-voltage switch cabinets. Background technique [0002] High-voltage switchgear is a direct device that supplies power to distribution networks or users, and is widely used in power systems. Because it is directly related to the power supply, the economic loss and social loss caused by the power outage caused by the failure of the high-voltage switchgear are very large. Due to the narrow space, many parts, complex structure and small insulation distance in the high-voltage switchgear, defects are more likely to occur, which brings hidden dangers to the safe operation of the high-voltage switchgear. AC withstand voltage test is the most effective and direct method to identify the insulation strength of electrical equipment. Since the AC withstand voltage test voltage is generally highe...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the current method of AC withstand voltage test for high-voltage switchgear has great subjectivity and limitations, and the test method is not reliable, so as to avoid repeated destructive withstand voltage tests on the internal equipment of the switchgear. To solve the problem of equipment insulation performance degradation, provide a partial discharge detection system for AC withstand voltage test of high-voltage switchgear

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